<!DOCTYPE html>
<html>
	<head>
		<meta charset="utf-8">
		<title></title>

	</head>
	<body>
		<div id="a" onclick="m()">我是ID1</div>
		<div class="a">我是class2</div>
		<div class="a" onclick="set()">我是ID3,让p变白色</div>
		<p name="a">我是p name</p>
		<script src="./1.js"></script>
	</body>
</html>
